Denver’s Friday temperatures are around 61 degrees early, with a high near 84. By afternoon, showers and thunderstorms are expected to develop, turning a patio-friendly start into an evening that may require a backup plan.
Storms Strengthen Friday Afternoon
Rain chances rise from a slight chance around midday to about 70% later in the afternoon. Some cells could produce gusty winds and brief heavy downpours. Showers and thunderstorms remain likely Friday night before midnight, followed by mostly cloudy skies and a low near 56.
No watches, warnings or advisories are currently in effect in the supplied forecast. That does not eliminate the need to monitor conditions: the main concern is that storms could make outdoor plans, travel and evening activities more difficult as coverage increases.
Saturday Has the Higher Rain Risk
Saturday’s normal high is 79 degrees, but another round of showers and thunderstorms is expected after noon. Forecast guidance points to locally heavy rainfall across the plains, with the potential for localized flooding where repeated downpours exceed the capacity of streets and drainage systems.
The City and County of Denver Office of Emergency Management says urban or street flooding can occur suddenly when intense rain overwhelms the city’s drainage capacity, with low-lying areas most vulnerable. That is risk context for the forecast, not confirmation that a particular Denver neighborhood will flood this weekend.
Denver’s emergency-management records also show that a separate 2013 flood led to $2,765,043 in response and cleanup spending, or $3.24 million in 2021 dollars. The figure illustrates the potential cost of a major flood but does not indicate that comparable damage is expected from this weekend’s storms. The city says Denver typically experiences about seven storms producing more than one-half inch of rain each year, a broad drainage-risk benchmark rather than a prediction for Saturday.
A Seasonal Shift, Not a Record Setup
Saturday’s projected high is close to the seasonal benchmark. National Weather Service Denver/Boulder climate records list Denver’s normal high for Sept. 19 as 79 degrees. The forecast therefore fits the usual late-September temperature range; it does not, by itself, signal a record event.
Storm chances remain high Saturday night, with a low near 54 under mostly cloudy skies. The weekend pattern remains unsettled.
Cooler and Drier by Sunday
Sunday turns cooler, with a high near 74 and a 40% chance of rain showers or thunderstorms. Conditions trend drier into Monday, which is expected to be sunny with a high near 75, although isolated showers cannot be completely ruled out across the broader region.
The workweek then warms modestly, with highs in the upper 70s to low 80s through Thursday. Most days look mostly sunny, though slight afternoon and evening thunderstorm chances linger Tuesday and Thursday. The near-term takeaway is a sharp weekend contrast: warm Friday, a wetter Saturday with the greatest localized-flooding concern, and cooler conditions by Sunday.
